I'm 15 and I usually have a normal period, it's usually not that heavy. But it's been 3 months in a row now, when I get my period I have been clotting bigger than usual. I read online and if it's bigger than a quarter then it may indicate some stuff. I went to the doctor when it first happened, they said it was normal that I was loosing so much blood. They said it can happen at least once a year. We ran some blood tests and they said I was fine but I feel there is something wrong. I don't know if clotting this much is normal, someone please help!